Techroutes FE1/100BASE-TX User manual

FE1/100BASE-TX Bridge
USER MANUAL
Version: 1.1

FE1/100BASE-TX Bridge Installation and Operation Manual
Page 1 of 21
C
Co on nt te en nt ts s
1. Product description .......................................................................2
2. Main features ................................................................................3
3. Technical specifications.................................................................5
4. Installation and panel description..................................................7
4.1 Unpacking (stand alone FE1/100BASE-TX Bridge).................7
4.2 Front and rear panel of the stand alone device .......................7
4.2.1 System test and configuration.........................................10
4.3 Front and rear panel of the rack mount.................................. 11
5. Applications of FE1/100BASE-TX Bridge....................................14
5.1 Definition of balanced twisted-pair wire sequence.................14
5.1.1 100BASE-TX interface wire sequence............................14
5.1.2 E1 interface wire sequence.............................................14
5.2 Setting of DIP switch and jumper...........................................14
5.2.1 Setting of E1 interface impedance .........................................15
5.3 Configuration of Ethernet connecting devices .......................16
5.4 Simple self-test methods for devices & E1 circuits ................17
5.5 Typical applications................................................................18
5.6 Common questions and their maintenance ...........................19

FE1/100BASE-TX Bridge Installation and Operation Manual
Page 2 of 21
1. Product description
FE1/100BASE-TX Interface Converter (also as
FE1/100BASE-TX Ethernet Bridge) is an Ethernet bridge of
high performance, which accomplishes the converting
between the 100M Ethernet port and the E1 port. As an
extended device of the Ethernet, the FE1/100BASE-TX
bridge realizes interconnection of two Ethernet by using the
E1 channel provided by existing networks with low cost.
100BASE-TX (RJ45) interfaces are provided at the
end of Ethernet LAN to accomplish various functions
including MAC address self-learning, address filtering,
address table maintenance and flow control.
E1 interfaces conforming to ITU-T G.703 and G.704
proposals are provided at the end ofWAN, supporting RJ45
and BNC connection modes. The E1 ports support both
framing and un-framing architecture. The user can select
an operating mode for the E1 interface according to the
connected E1 environment. This provides flexibility of
network application. In the framing mode, the E1 interface
provides a rate of N*64Kbps（N=1~31）. In the un-framing
mode, the E1 channel provides a rate of 2.048Mbps and
accomplishes transparent transmission.
If the FE1/100BASE-TX bridge is used in the framing

FE1/100BASE-TX Bridge Installation and Operation Manual
Page 3 of 21
mode, the transmission clock can be either provided
internally, i.e. using the main clocking timing mode (INT), or
extracted from the E1 channel, i.e. using slave clock timing
mode.
The FE1/100BASE-TX bridge provides plenty of
self-test functions, supporting local loop and remote loop. It
also provides pseudo random code test function to test
error codes in the circuit.
It is proposed to use the products of this series in pairs.
A typical application is shown in figure 1.
Figure1 typical application of FE1/100BASE-TX bridge
2. Main features
In accordance with the provisions of IEEE 802.3、
802.3u Ethernet, ITU-T G.703, G.704 and G.823
protocols.
E1 interface framing/un-framing optional; balanced
120ohm unbalanced 75ohm optional.
The E1 interface uses PCM31 mode, supporting CRC
check.
E1 interface main/ slave clock optional in the framing
mode.
SD
H
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LN
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LO
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TX
R
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LOO
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LO
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SDH SWITCH/HUB
SWITCH/HUB B
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FE1/ETH
CR
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FE1/ETH

FE1/100BASE-TX Bridge Installation and Operation Manual
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In the E1 framing mode, the number of time slots is
optional from 1 to 31.
Supporting 2.048Mbps transparent transmission in the
E1 un-framing mode.
The 100BASE-TX Ethernet interface supports 100M
half/ full duplex modes.
MAC addresses self-learning and addresses filtering
functions, reducing the transmission load of the E1
circuit.
Built-in 64Mbits SDRAM Ethernet data buffer memory,
improving the capability of Ethernet side anti-outburst,
assuring high throughput of data transmission.
E1 circuit remote loop and local loop tests.
Pseudo random sequence test, facilitating the test of
E1 circuit.
Perfect circuit test and alarm indication.
Two architectures: stand alone and 19in rack mount
architecture (15 interface converter modular and one
NMS modules or 16 interface converter modules can
be inserted in the rack mount architecture) ;
Optional AC 220V or DC –48V input for bridge of both
architectures
Hot rear up of double power supplies is provided for

FE1/100BASE-TX Bridge Installation and Operation Manual
Page 5 of 21
the Bridge of rack mount architecture, assuring high
reliability.
Support local Hypber Terminal management via
RS232 serial port and remoter management by Telnet、
Web、SNMP and CGI management software.
Can be communicate with the bridge of other
company.
3. Technical specifications
Protocol: G.703, G.704, G.736, G.823, I.431
IEEE802.3 100BASE_TX
Circuit interface (E1):
Impedance: 75ohm, physical interface: BNC
Impedance: 120ohm, physical interface: RJ45
interface rate: framing: N*64Kbps，N=0~31;
un-framing: 2.048Mbps。
Coding: HDB3, Jitter tolerance in accordance with G.823
Output jitter<0.05UI
Data interface (100BASE_TX):
Impedance: 100ohm, physical interface: RJ45
Interface rate: 100Mbps
Coding: Manchester
Cable: 75ohm coaxial-cable, UTP5 twisted pair。

FE1/100BASE-TX Bridge Installation and Operation Manual
Page 6 of 21
Transmission range:
circuit interface: BNC: 600m; RJ45: 300m; Data
interface: 100m
Indicator: indicating power, connection states of data and
circuit interfaces, operation state, test state and
trouble alarm.
Dimensions:
stand alone: 140mm (dep) x 210mm (wid) x 40mm (hei)
Rack mount: 19in standard 4.5U cabinet
Power supply:
stand alone: 85V～264V AC input, 5V/1A output
-36V～-72V DC input，5V/1A output
rack mount：150V～260V AC input，5V/16A、12V/1A
output
-38V～-58V DC input，5V/16A、12V/1A
output
Power dissipation：3W
Operational temperature: 0℃～50℃
Storage temperature: -20℃～80℃
Humidity: 5%～90% (no condensation)

FE1/100BASE-TX Bridge Installation and Operation Manual
Page 7 of 21
4. Installation and panel description
4.1 Unpacking (stand alone FE1/100BASE-TX Bridge)
Check the accessories and spare parts when opens the
package. In case of missing, immediately contact our
offices or agencies. Check for the following items:
■ One FE1/100BASE-TX Bridge
■Product eligibility card
■ Operation manual
■ A supply cord
■ Two plugs for coaxial cable
■Box up list
In case of any damage in transportation, contact our
offices or agencies.
4.2 Front and rear panel of the stand alone device
The front panel of the FE1/100BASE-TX Bridge is
shown in figure 2.
Figure 2 front panel of FE1/100BASE-TX Bridge
Explanations for the two rows of indicators at the left are as
follows:
POWER: Power. Always lights after starting up.
ETH
LNK LOFTX
RX AIS LOOP PTOK
LOS
E1
POWER CRC
TEST
ETH
LNK LOFTX
RX AIS LOOP PTOK
LOS
E1
POWER
FE1/ETH
CRC
TEST

FE1/100BASE-TX Bridge Installation and Operation Manual
Page 8 of 21
LINK: Link.Always lights if the data link is complete.
RX: Data reception. Flickers when the data interface
receives data.
TX: Data transmission. Flickers when the data interface
transmits data.
LOF: Alarm indicator lamp for input signal out-of-frame in
E1 line. Constantly lightening indicates the alarm with local
device; flash indicates the alarm with opposite device.
Alarm status of opposite device can be detected only at
framing mode.
LOS: E1 link interruption alarm. Always lights after starting
up till synchronization is established. It also lights in
case of E1 link interruption or signal loss in
communication.
AIS: Always lights after receiving an alarm indication
signal from the uplink.
CRC: Always lights after finding CRC check error.
LOOP: Test. Always lights in testing (transmitting local or
remote E1 interface loop instructions or
pseudo-random sequence test instructions).
PTOK：Circuit pseudo-random sequence test success. In
the state of remote E1 interface loop, transmits

FE1/100BASE-TX Bridge Installation and Operation Manual
Page 9 of 21
pseudo-random codes to the remote equipment via
local E1 interface, and checks for error codes
according to the pseudo-random codes received at
the local E1 interface. If there is no error code, the
indicator always lights. This function can be used to
check the E1 circuit.
Note: Circuit pseudo-random sequence test is valid
only when the local equipment is in the framing
mode and main clock is configured.
The AC input rear panel of FE1/100BASE-TX Bridge is
shown in figure 3.
Figure 3 AC input rear panel of FE1/100BASE-TX Bridge
220VAC: AC socket with two cores
OFF ON：Power switch. When the ON button is pressed
down, the power supply is turned on
8 bits coded Switch: System configure, more description in
5.2
E1-75Ω TX／RX: BNC transmission/reception socket for
75ohm impedance E1 interface
E1-120Ω: RJ45 socket for 120ohm impedance E1 interface
ETH: RJ45 socket for 100Mbps Ethernet interface
OFF ON E1-75?
TX RX ETH
220V AC
E1-120?
1 2 3 4 5 6 7 8ON
OFF ON E1-75?
TX RX ETH
220V AC
E1-120?
1 2 3 4 5 6 7 8ON
RLOOP
LLOOP
75Ω
R-SLOTS
INT-CLK
L-SLOTS
LINE-CLK
120Ω
E_CUT

FE1/100BASE-TX Bridge Installation and Operation Manual
Page 10 of 21
The DC input rear panel of FE1/100BASE-TX Bridge is
shown in figure 4.
Figure 4 DC input rear panel of FE1/100BASE-TX bridge
48V DC：DC -48V power supply connector
The others are the same as in figure 3.
The code switch on rear panel is S5. which is the
system configure set.
(1) When S5.6~S5.8 is all jumped to end 75, the physical
match impedance of the E1 interface is 75ohm
non-balanced coaxial cable. (The E1 circuit uses BNC
coaxial-cable sockets.)
(2) When S5.6~S5.8 is all jumped to end 120, the physical
match impedance of the E1 interface is 120ohm balanced
twisted-pair. (The E1 circuit uses RJ45 sockets.)
Note: the default factory setting is (1).
4.3 System test and configuration
S5.1: main/slave clock setting. ON for main clock (INT-CLK)
and OFF for slave clock (LINE-CLK).
OFF ON E1-75?
TX RX ETH
E1-120?
OFF ON E1-75?
TX RX ETH
E1-120?
48V DC
1 2 3 4 5 6 7 8ON 1 2 3 4 5 6 7 8ON
RLOOP
LLOOP
75Ω
R-SLOTS
INT-CLK
L-SLOTS
LINE-CLK
120Ω
E_CUT

FE1/100BASE-TX Bridge Installation and Operation Manual
Page 11 of 21
S5.2: Track remote time slot setting or not, on for R-SLOTS,
OFF for L-SLOTS (valid only when S5.1 ＝OFF)
S5.3: mode select. ON for allow transmit the data from
the Eth interface to the E1 interface and take back
when loop test. OFF(E_CUT) for cut off the data from
the Eth interface completely when loop test.
S5.4: LLOOP. Local loop back setting (E1 interface in direct
loop back), ON valid.
S5.5: RLOOP. Remote loop back setting (remote E1
interface in direct loop back), ON valid.
Remote loop loops rear the E1 port of the remote
equipment by sending remote loop instructions to the
remote equipment through the local equipment. Remote
loop can be used to check the E1 circuit.
When you set RLOOP, you must make the local device
at main clock and the framing mode.
4.4 Front and rear panel of the rack mount
The front panel of RACK is shown in figure 5.
Figure 5 Front panel of RACK
PWR
RXD
TXD
LOS
LOF
TES
T
PTO
K

FE1/100BASE-TX Bridge Installation and Operation Manual
Page 12 of 21
+5V: 5V main power indicator
+12V: 12V fan power indicator
Underneath the panel there is an indicator matrix. See
figure 2 about the description of the front panel of
FE1/100BASE-TX Bridge for its functionality.
The rear panel of RACK is shown in figure 6.
Figure 6 Rear panel of rack
The panel above consists of three different small panels:
The small panel of FE1/100BASE-TX bridge module,
as shown in figure 7.
Figure 7 Panel of FE1/100BASE-TX bridge module
See figure 3 about the description of AC input rear panel of
FE1/100BASE-TX bridge for the functions of every
O I
O I

FE1/100BASE-TX Bridge Installation and Operation Manual
Page 13 of 21
component of the small panel.
The panel of RACK/AC AC redundant power supply is
shown in figure 8.
Figure 8 Panel of rack/ACAC redundant power supply
160-270VAC: AC 220V input socket
ON OFF: Power converter
+5V: 5V main power indicator
+12V: 12V fan power indicator
The panel of RACK/DC DC redundant power supply is
shown in figure 9.
Figure 9 Panel of rack/DC DC redundant power supply
40-60VDC: DC-48V connector (FG to protective GND, “-
+” is the polarity of the –48V DC input)
ON OFF: Power converter
O I
I O

FE1/100BASE-TX Bridge Installation and Operation Manual
Page 14 of 21
+5V: 5V main power indicator
+12V: 12V fan power indicator
5. Applications of FE1/100BASE-TX Bridge
5.1 Definition of balanced twisted-pair wire sequence
for RJ45 interface
5.1.1 100BASE-TX interface wire sequence
The RJ45 Unshielded twisted-pair for 100BASE-TX
interface can use DCE or DTE standard stipulations, it
support AUTO MDI/MDX function. Complied with
EIA/TIA-568A、EIA/TIA-568B.
5.1.2 E1 interface wire sequence
1 and 2 are transmitting lines, 4 and 5 are receiving lines, as
shown in figure 10.
Figure 10 RJ45 balanced twisted-pair wire sequence for E1 interface
5.2 Setting of DIP switch and jumper
For a rack mount unit, the module can be easily drawn out
1
2
3
4
5
6
7
8
1. TX+ Positive end of data transmission
2. TX- Negative end of data transmission
3. Idel
4. RX+ Positive end of data reception
5. RX- Negative end of data reception
6. Idel
7. Idel
8. Idel

FE1/100BASE-TX Bridge Installation and Operation Manual
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from the guide channel just by unscrewing the screws on
the module panel.
5.2.1 Setting of E1 interface impedance
Bottom coded switch, as shown in Figure 11 ：
Figure 11 E1 Time Slot Setting
After time slot 0 is valid, other coded switches in whatever
positions are all valid. Select the number of time slots
according to the expected rate. Normally for an
independent type, a time slot setting of automatic tracking
Central Site module is selected. Coded switches of
plate-clip time slot correspond to S1, S2, S3 and S4.
●1st switch (S1.1) is used for controlling E1
framing/un-framing. “ON” refers to un-framing mode
(2.048Mbps).
●31 switches, from 2nd—32nd (S1.2~S1.8, S2, S3, S4),
are respectively used for controlling the selection of 1st
–31st time slots. Set at “ON”, the corresponding time slot is
selected; set at “OFF”, the corresponding time slot is not
SW
Status
Function
Status
Function
Default
0
ON
Unframed 2048KBps
/
/
OFF
OFF
CCS (PCM31)
OFF
CAS
(PCM30)
16
ON
OFF
OFF
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
E1 TS 0 7 15 23 31
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
1 2 3 4 5 6 7 8
ON
E1 TS 0 7 15 23 31

FE1/100BASE-TX Bridge Installation and Operation Manual
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selected. The rate of E1 interface is completely dependent
on the number of the selected time slots.
For example: the setting of 3rd switch to “ON” and all other
switches to “OFF” indicates that 2nd time slot is selected,
at this moment the rate is 64K; the setting of 7th and 8th
switches to “ON” and all other switches to “OFF” indicates
that 6th and 7th time slots are selected, with a rate of
2*64K=128K. TS0 setting is used for specifying E1 frame
to be transparent or framing:‘0’--framing, “1”--un-framing.
But the bit has to be specified in combination with other
time slots. TS16 setting is used for controlling E1 frame
structure to be PCM30（CAS）or PCM31（CCS ）:
‘0’—PCM30, at this moment 16th time slot must not be
used for transmission service; ‘1’—PCM31, 16th time slot
can be used for transmission service. Besides, TS1—TS31
are respectively used for controlling the selection of
1st—31st time slots: ‘1’—the corresponding time slot is
selected; ‘0’—the corresponding time slot is not selected.
5.3 Configuration of Ethernet connecting devices
The equipment uses 100BASE-TX Ethernet interfaces
and supports adaptive 100M half/full duplex mode.
Ethernet devices connected to FE1/100BASE-TX bridge
(such as SWITCH, HUB, Ethernet adapter card (NIC), etc.)
can be set to 100M full duplex, 100M half duplex, adaptive
100M half/full duplex and adaptive 10/100M.

FE1/100BASE-TX Bridge Installation and Operation Manual
Page 17 of 21
5.4 Simple self-test methods for devices & E1 circuits
Test 1: test of back-to-back connection
Connect two FE1/100BASE-TX bridge devices back to
back, ping the other’s IP address on the two computers to
test the two devices.
Test 2: test of E1 circuit transmission error codes.
Connect the device in the real operational environment,
check the E1 circuit with the loop and pseudo-random
sequence test function provided by the device.
If the exchange end and the user end is very far away,
the E1 circuits of the two FE1/100BASE-TX bridge must be
correctly connected first. Otherwise, indicator LOS will
always light. Set the device at the exchange end to framing
and main clock mode, set S5.5 (RLOOP) to ON, pseudo
random sequence test will be executed. At the exchange
end if indicator LOOP flickers and indicator PTOK always
light, it means successful loop and pseudo random code
test and the E1circuit has no error code.
S5.1
S5.5
ON
ON
ET
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LO
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FE1/ETH
CR
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TES
T
A
PC1PC2
FE1/ETH

FE1/100BASE-TX Bridge Installation and Operation Manual
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5.5 Typical applications
Mode 1: connect Ethernet with E1 networks.
SDH, PDH and DDN networks have already been
widely adopted. With E1 channels provide by such
networks, bridging connection and interconnection of two
Ethernet networks at different locations can be easily
realized by the FE1/100BASE-TX bridge.
Connecting two Ethernet networks with an E1 network.
Mode 2: Extend an Ethernet network with existing twisted
pair or coaxial cable.
Connected with twisted pair or 75ohm coaxial cable,
the E1 ports of FE1/100BASE-TX Bridge support a
transmission range of 300m or 600m. Two Ethernet
networks at different locations can be bridged by two
FE1/100BASE-TX bridge with existing twisted pair or
coaxial cable.
Extending Ethernet with existing twisted pair and coaxial cable
SDH
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FE1/ETH
CR
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CR
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B
FE1/ETH
SD
H
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LO
F
TX
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LOO
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LO
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TX
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LOO
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LO
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1
POWE
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CR
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TES
T
SD
H
SDH SWITCH/HUB
SWITCH/HUB B
ET
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LN
K
LO
F
TX
R
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LOO
P
PTO
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LO
S
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POWE
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TX
R
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LOO
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LO
S
E
1
POWE
R
FE1/ETH
CR
C
TES
T
ET
H
LN
K
LO
F
TX
R
X
A
S
LOO
P
PTO
K
LO
S
E
1
POWE
R
CR
C
TES
T
ET
H
LN
K
LO
F
TX
R
X
A
S
LOO
P
PTO
K
LO
S
E
1
POWE
R
CR
C
TES
T
A
FE1/ETH
ET
H
LN
K
LO
F
T
X
R
X
A
S
LOO
P
PTO
K
LO
S
E
1
POWE
R
CR
C
TES
T
ET
H
LN
K
LO
F
T
X
R
X
A
S
LOO
P
PTO
K
LO
S
E
1
POWE
R
CR
C
TES
T
SWITCH/HUB SWITCH/HUB
B
ET
H
LN
K
LO
F
T
X
R
X
A
S
LOO
P
PTO
K
LO
S
E
1
POWE
R
CR
C
TES
T
ET
H
LN
K
LO
F
T
X
R
X
A
S
LOO
P
PTO
K
LO
S
E
1
POWE
R
CR
C
TES
T
ET
H
LN
K
LO
F
T
X
R
X
A
S
LOO
P
PTO
K
LO
S
E
1
POWE
R
CR
C
TES
T
ET
H
LN
K
LO
F
T
X
R
X
A
S
LOO
P
PTO
K
LO
S
E
1
POWE
R
CR
C
TES
T
ET
H
LN
K
LO
F
T
X
R
X
A
S
LOO
P
PTO
K
LO
S
E
1
POWE
R
CR
C
TES
T
ET
H
LN
K
LO
F
T
X
R
X
A
S
LOO
P
PTO
K
LO
S
E
1
POWE
R
FE1/eth
CR
C
TES
T
A
FE1/eth

FE1/100BASE-TX Bridge Installation and Operation Manual
Page 19 of 21
5.6 Common questions and their maintenance
(For independent interface converter, reference for frame
bridge)
No.
Symptoms
Causes
Remedies
1
The power
indicator does
not light after
starting up.。
The power
circuit has
a failure.
1. The power is not
connected. Check the contact
of the power lines and the
converters.
2. The internal power module
has a failure. Send it rear to
factory for repair.
2
Indicator LINK
does not light
when the
Ethernet
network is
connected.
Integrity
test of link
has not
passed.
1. The type of the cable does
not meet the DTE/DCE
modes of the Ethernet ports of
the equipment.
2. The crystal head of the
cable is not well molded.
Check the quality of the UTP
cable.
3. The rate setting of the
converter or the network card
is wrong. See 5.3.
4. The internal circuit of the
equipment is damaged. Send
it to factory for repair.